Baader Hyperion 21 mm 31.75mm

21 mm wide-field eyepiece for maximum comfort and contrast

This 21 mm fixed focal-length eyepiece offers excellent viewing comfort thanks to its 68° apparent field of view. Its optical design allows immersive observation while maintaining a sharp, high-contrast image, even at high magnification.

Wide field and comfortable vision

• Fixed focal length : 21 mm
• Apparent field : 68°
• Comfortable viewing even at high magnification
• Immersive image ideal for deep sky and extended objects

High-quality optical coating

Optical surfaces benefit from Zeiss-class Phantom Group cladding, The new, ultra-high-efficiency, high-reflectance, high-transmittance, high-efficiency glass is renowned for its ability to effectively reduce internal reflections and maximize light transmission.

• Virtually eliminates stray reflections
• Maximum image contrast
• High light transmission
• Better visibility of fine details

Double compatibility 1.25″ and 2″

The eyepiece is supplied with 1.25″ and 2″ insert skirts, This allows flexible use with the majority of eyepiece holders and angled eyepieces on the market.

• Universal compatibility
• Easy adaptation to different optical configurations
• Visual or imaging use

Camera and accessory connections

Several integrated threads allow easy adaptation of photographic accessories and the use of different imaging techniques.

• Direct camera adapter
• Compatibility with afocal accessories
• Classic eyepiece projection possible
• Versatile use for observation and photography

Key features

A versatile eyepiece for observation and imaging

With its 21 mmhis 68° field of view and high-end optical coatings, this eyepiece is an excellent choice for astronomers seeking a bright, high-contrast, comfortable image for both visual observation and certain photographic applications.